Determination of mercury in an assortment of dietary supplements using an inexpensive combustion atomic absorption spectrometry technique [0.03%]
利用燃烧原子吸收光谱法测定膳食补充剂中的汞含量
Keith E Levine,Michael A Levine,Frank X Weber et al.
Keith E Levine et al.
The concentrations of mercury in forty, commercially available dietary supplements, were determined using a new, inexpensive analysis technique. The method involves thermal decomposition, amalgamation, and detection of mercury by atomic abs...
Jonathan Bruce
Jonathan Bruce
The majority of anions found in beer are a consequence of impurities derived from the water used during the brewing process. The process of beer manufacture consists of malting, brewing and fermentation followed by maturation before filtrat...
Low-cost virtual instrumentation system of an energy-dispersive X-ray spectrometer for a scanning electron microscope [0.03%]
基于扫描电子显微镜能量色散X射线台的低成本虚拟仪器系统
Junfeng Lei,Libo Zeng,Ronggui Liu et al.
Junfeng Lei et al.
The paper describes an energy-dispersive X-ray spectrometer for a scanning electron microscope (SEM-EDXS). It was constructed using the new architecture of a virtual instrument (VI), which is low-cost, space-saving, fast and flexible way to...
Solvent effect modelling of isocyanuric products synthesis by chemometric methods [0.03%]
化学计量学方法模拟异氰酸酯产物合成中的溶剂效应模型
Jean-Louis Havet,Myriam Billiau-Loreau,Catherine Porte et al.
Jean-Louis Havet et al.
Chemometric tools were used to generate the modelling of solvent effects on the N-alkylation of an isocyanuric acid salt. The method proceeded from a central composite design applied on the Carlson solvent classification using principal com...
Design and development of a multichannel potentiometer for monitoring an electrode array and its application in flow analysis [0.03%]
用于监测电极阵列的多通道电位计的设计、开发及其在流动分析中的应用研究
Jarbas J R Rohwedder,Celio Pasquini,Ivo M Raimundo Jr et al.
Jarbas J R Rohwedder et al.
A versatile potentiometer that works with electrode arrays in flow injection and/or monosegmented flow systems is described. The potentiometer is controlled by a microcomputer that allows individual, sequential multiplexed or random accesse...
Design of LabVIEW-based software for the control of sequential injection analysis instrumentation for the determination of morphine [0.03%]
基于LabVIEW的顺序注射分析仪器控制软件的设计及吗啡测定
Claire E Lenehan,Neil W Barnett,Simon W Lewis
Claire E Lenehan
LabVIEW-based software for the automation of a sequential injection analysis instrument for the determination of morphine is presented. Detection was based on its chemiluminescence reaction with acidic potassium permanganate in the presence...
To robotize chemistry laboratories. An example of organic synthesis: 2-Boc-amino-N-hydroxy-3-phenyl-propionamide [0.03%]
实验室机器人化。有机合成实例：特丁氧羰基-N-羟基-苯丙酰胺
G Christophe,L Chapelant,S Bostyn et al.
G Christophe et al.
The paper describes the development of periodic modules used for the peptide synthesis of hydroxamic acid. A powder conveyor using the principle of positive weighing distribution is described. Purification is provided using automatic filtra...
Automated analyser for monitoring trace amounts of volatile chloro-organic compounds in recirculated industrial water [0.03%]
用于监测循环工业水中痕量挥发性氯有机化合物的自动化分析仪
Wacław Janicki,Wojciech Chrzanowski,Andrzej Wasik et al.
Wacław Janicki et al.
An automated analyser of volatile chloro-organic compounds in water was constructed and tested using standard mixtures of dichloromethane and dichloroethane. It was based on continuous, countercurrent gas stripping of the liquid sample foll...
David T Rossi
David T Rossi
A novel, integrated approach for automated sample handling in drug discovery bioanalysis is described. The process includes aspects of animal study design, biological sample collection, sample processing and high-throughput APILC/MS operati...